CVE-2025-7635 | BDVDB-2026-292865 Detail

CalixGigaCenter ONT

Description#

Unauthenticated Telnet access vulnerability in Calix GigaCenter ONT allows root access.This issue affects GigaCenter ONT: 844E, 844G, 844GE, 854GE.

CAPEC-114 Authentication Abuse

No public exploit known

8.7 High

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 31.0.

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Authentication Issues

No specific action is recorded in the source data. Check the references for vendor guidance.

8.7 High

CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Metric breakdown
Attack Vector	Adjacent
Attack Complexity	Low
Attack Requirements	None
Privileges Required	None
User Interaction	None
Vulnerable System Confidentiality	High
Vulnerable System Integrity	High
Vulnerable System Availability	High
Subsequent System Confidentiality	None
Subsequent System Integrity	None
Subsequent System Availability	None

Not available

Not available

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).